WO2015043422A1 - Contact module for breaker - Google Patents

Contact module for breaker Download PDF

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Publication number
WO2015043422A1
WO2015043422A1 PCT/CN2014/086918 CN2014086918W WO2015043422A1 WO 2015043422 A1 WO2015043422 A1 WO 2015043422A1 CN 2014086918 W CN2014086918 W CN 2014086918W WO 2015043422 A1 WO2015043422 A1 WO 2015043422A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
outer casing
contact outer
rotating shaft
rotor component
Prior art date
Application number
PCT/CN2014/086918
Other languages
French (fr)
Chinese (zh)
Inventor
刘毅
顾翔
王忠斌
Original Assignee
上海电科电器科技有限公司
浙江正泰电器股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海电科电器科技有限公司, 浙江正泰电器股份有限公司 filed Critical 上海电科电器科技有限公司
Priority to CA2925043A priority Critical patent/CA2925043C/en
Priority to EP14847398.6A priority patent/EP3051565B1/en
Priority to US15/024,334 priority patent/US9704675B2/en
Priority to PL14847398T priority patent/PL3051565T3/en
Publication of WO2015043422A1 publication Critical patent/WO2015043422A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
    • H01H71/0257—Strength considerations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H01H2071/1036—Interconnected mechanisms having provisions for four or more poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/01—Spiral spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole

Definitions

  • This invention relates to the field of circuit breakers and, more particularly, to a contact module for a circuit breaker having an asymmetrical structure.
  • the double-breakpoint molded case circuit breaker has much better breaking performance than the single-breakpoint molded case circuit breaker.
  • the double-breakpoint molded case circuit breaker adopts a modular structure, which is not only easy to assemble but also The insulation performance is very good, but due to this structure, two contact modules are added to each stage of the circuit breaker, and because such circuit breakers need to withstand a large breaking current, that is, a strong gas shock, so touch
  • the head module still needs to have high strength requirements, which requires the contact module of the circuit breaker to have a certain thickness, which makes it difficult to reduce the phase spacing of the entire circuit breaker, especially for small frame products, such as 100A, 125A.
  • the 160A eventually causes the circuit breaker to become very wide, and the miniaturization of the circuit breaker has always been one of the development directions of the circuit breaker. Therefore, the breaking force of the breaking current of the circuit breaker and the size of the circuit breaker become a contradiction. .
  • the current 160A products on the market generally have a circuit breaker width of 120mm and a phase spacing of 30mm. Although it can carry a large current, the size of the circuit breaker is too large, which limits the application field and installation.
  • the invention aims to propose a contact module of a circuit breaker, which takes into account the breaking current carrying capacity and the size of the contact module, and is effectively reduced in the case of maintaining the breaking current carrying capacity by the asymmetric design and the application of a single spring.
  • the size of the contact module is effectively reduced.
  • a contact module of a circuit breaker comprising: a base, an upper cover, an operating mechanism, three single-pole switches and a tripping mechanism.
  • the upper cover covers the accommodating space to form a receiving space, and the operating mechanism, three kinds of single-pole switches and the tripping mechanism are disposed in the accommodating space. Fuck The mechanism is associated with one of the single pole switches, and the trip mechanism is connected to the three single pole switches.
  • the three unipolar switches are all asymmetric, including the strong side and the weak side.
  • the contact housing on the strong side of each unipolar switch is thickened and connected to the thicker shaft.
  • each unipolar switch The contact on the weak side of each unipolar switch
  • the outer casing is thin and connected to a thinner shaft, the rotor component in each single pole switch having only a single contact spring, and a single contact spring mounted on the weak side.
  • the adjacent single pole switches are linked by the linkage shaft connecting the shafts, and the strong side of one of the single pole switches and the weak side of the other single pole switch.
  • each of the three single pole switches includes an outer shell module that is spliced from two contact outer shells, a rotor component that is placed in the contact outer shell module, a connecting rotor component, and two Two rotating shafts of the contact housing.
  • the two contact outer casings are spliced to form an inner cavity, the rotor component is installed in the inner cavity, the strong side contact outer casing is thicker on the side wall of the inner cavity portion, and the weak outer contact outer casing is in the inner cavity portion.
  • the side walls are thin.
  • the thicker shaft cooperates with the side wall of the inner cavity portion of the strong side contact outer casing, and has a strong matching boss
  • the thinner rotating shaft cooperates with the side wall of the inner cavity portion of the weak side contact outer casing, and has a weak Fit the boss.
  • the strong mating boss is horizontally stepped and the weak mating boss is inclined.
  • the three single pole switches include a first single pole switch, a second single pole switch, and a third single pole switch.
  • the number of the first single-pole switches is two, which constitutes the N-phase and the A-phase of the contact module
  • the operating mechanism is connected to the second single-pole switch
  • the second single-pole switch constitutes the B-phase of the contact module
  • the third monopole The switch constitutes the phase C of the contact module.
  • the first single pole switch includes a first contact housing, a second contact housing, a first shaft, a second shaft, a first rotor member, a stationary contact, and an arc chute.
  • the first contact outer casing is a strong side contact outer casing
  • the second contact outer casing is a weak side contact outer casing
  • the first contact outer casing and the second contact outer casing are spliced to form a inner cavity, the inner cavity
  • the first rotor component, the stationary contact and the arc extinguishing chamber are accommodated therein.
  • the first rotating shaft is a thick rotating shaft, and cooperates with the first contact outer casing
  • the second rotating shaft is a thin rotating shaft, and cooperates with the second contact outer casing
  • the length of the first rotating shaft does not extend out of the first contact outer casing
  • the length of the second shaft extends beyond the second contact housing.
  • the second single pole switch includes a third contact housing, a fourth contact housing, a first shaft, a third shaft, a second rotor member, a stationary contact, and an arc chute.
  • the housing is a weak side contact housing body having a symmetrical structure with the second contact housing body
  • the fourth contact housing body is a strong side contact housing body having a symmetrical structure with the first contact housing body
  • a third The contact outer casing and the fourth contact outer casing are spliced to form an inner cavity, the inner cavity accommodating the second rotor component, the static contact and the arc extinguishing chamber, and the second rotor component and the first rotor component have a symmetrical structure.
  • the first rotating shaft cooperates with the fourth contact outer casing, the third rotating shaft is a thin rotating shaft, the third rotating shaft is matched with the third contact outer casing, and the length of the third rotating shaft does not extend beyond the third contact outer casing, The length of the first shaft does not extend beyond the four-contact outer casing.
  • the third single pole switch includes a third contact outer casing, a fourth contact outer casing, a first rotating shaft, a second rotating shaft, a second rotor member, a stationary contact, and an arc extinguishing chamber.
  • the third contact outer casing is a weak side contact outer casing, and has a symmetrical structure with the second contact outer casing
  • the fourth contact outer casing is a strong side contact outer casing, and is symmetric with the first contact outer casing
  • the structure, the third contact outer casing and the fourth contact outer casing are spliced to form an inner cavity, the inner cavity accommodating the second rotor component, the static contact and the arc extinguishing chamber, and the second rotor component and the first rotor component have a symmetrical structure.
  • the first rotating shaft cooperates with the fourth contact outer casing body, and the second rotating shaft cooperates with the third contact outer casing body, the length of the first rotating shaft does not extend beyond the fourth contact outer casing body, and the length of the second rotating shaft extends out of the third Outside the contact housing.
  • the present invention adopts an asymmetrical design.
  • the thickness of the housing on one side of the single pole switch is reduced, and the number of contact springs used for the rotor component is reduced to one, thereby ensuring the strength of the module.
  • the size of the contact module is reduced while maintaining the breaking current carrying capacity.
  • FIG. 1 discloses a schematic structural view of a circuit breaker according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing the structure of a circuit breaker after removing an upper cover and a base according to an embodiment of the present invention.
  • FIG. 3 illustrates a first single pole opening in a contact module of a circuit breaker in accordance with an embodiment of the present invention. Schematic diagram of the structure.
  • FIG. 4 is a block diagram showing the structure of a second single pole switch in a contact module of a circuit breaker in accordance with an embodiment of the present invention.
  • FIG. 5 is a block diagram showing the structure of a third single pole switch in a contact module of a circuit breaker according to an embodiment of the invention.
  • FIG. 6 is a block diagram showing the structure of a first rotor component in a contact module of a circuit breaker in accordance with an embodiment of the present invention.
  • FIG. 7 is a block diagram showing the structure of a second rotor component in a contact module of a circuit breaker in accordance with an embodiment of the present invention.
  • Figure 8 discloses a schematic view of the structure of the first link in the second rotor component.
  • Figure 9 discloses a schematic view of the structure of the second link in the second rotor component.
  • Figure 10 discloses a schematic view of the structure of the contact bridge in the second rotor component.
  • Figure 11 illustrates a cross-sectional view of a single pole switch interconnect in a contact module of a circuit breaker in accordance with an embodiment of the present invention.
  • Figure 12 is a cross-sectional view showing the rotor module removed and only the contact module and the rotating shaft are removed on the basis of Figure 11.
  • Figure 13 is a cross-sectional view showing the interconnection of the single pole switches used in the contact modules of the prior art circuit breakers.
  • the invention adopts an asymmetric contact module, reduces the number of contact springs of the rotor component in the contact module to one, and makes the thickness of the sidewalls on both sides of the contact module different, thereby ensuring the strength of the module.
  • the thickness of each single pole switch is reduced, so that the width dimension of the entire circuit breaker composed of the interconnected contact modules is reduced.
  • FIG. 1 discloses a schematic structural view of the circuit breaker
  • FIG. 2 discloses a schematic structural view of the circuit breaker after removing the upper cover 102 and the base 101.
  • the upper cover 102 covers the base 101 to form a receiving space, and the operating mechanism 103, three single-pole switches and the tripping mechanism 104 are disposed in the receiving space.
  • the operating mechanism 103 is coupled to one of the single pole switches, and the trip mechanism 104 is coupled to all three of the single pole switches.
  • the three unipolar switches are all asymmetric, including the strong side and the weak side.
  • the contact housing on the strong side of each unipolar switch is thickened and connected to the thicker shaft.
  • the contact on the weak side of each unipolar switch The outer casing is thin and connected to a thinner shaft, the rotor component in each single pole switch having only a single contact spring, and a single contact spring mounted on the weak side.
  • the adjacent single pole switches are linked by the linkage shaft connecting the shafts, and the strong side of one of the single pole switches and the weak side of the other single pole switch.
  • Each of the three unipolar switches includes an outer casing module formed by splicing two contact outer casings, a rotor component disposed in the contact outer casing module, two connecting rotor components and two contact outer casings A shaft.
  • the two contact outer casings are spliced to form an inner cavity, the rotor component is installed in the inner cavity, the strong side contact outer casing is thicker on the side wall of the inner cavity portion, and the weak outer contact outer casing is in the inner cavity portion.
  • the side walls are thin.
  • the thicker shaft cooperates with the side wall of the inner cavity portion of the strong side contact outer casing, and has a strong matching boss
  • the thinner rotating shaft cooperates with the side wall of the inner cavity portion of the weak side contact outer casing, and has a weak Fit the boss.
  • four contact outer casings are provided, which are a first contact outer casing 201, a second contact outer casing 202, a third contact outer casing 203, and a fourth contact outer casing 204, respectively.
  • the first contact outer casing 201 and the second contact outer casing 202 are matched and spliced to each other, and the third contact outer casing 203 and the fourth contact outer casing 204 are matched and spliced to each other.
  • the first contact outer casing 201 and the fourth contact outer casing 204 have mutually symmetrical structures, and the first contact outer casing 201 and the fourth contact outer casing 204 are both strong side contact outer casings, and the side walls are thick. .
  • the second contact outer casing 202 and the third contact outer casing 203 have mutually symmetrical structures, and the second contact outer casing 202 and the third contact outer casing 203 are both weak side contact outer casings, and the side walls are thin. .
  • the inner cavity is not located in the middle, but is biased toward the weak side.
  • the present invention also provides two rotor components, and Figure 6 discloses a break in accordance with an embodiment of the present invention.
  • FIG. 7 discloses a structural schematic diagram of the second rotor component in the contact module of the circuit breaker according to an embodiment of the present invention.
  • the first rotor component and the second rotor component differ only in the position of the contact spring.
  • the second rotor member will be described as an example.
  • the second rotor component 300 includes a rotor bracket 302, a first shaft 303, a second shaft 304, a third shaft 305, a first link 306, a second link 307, a contact bridge 308, and a contact.
  • Spring 309 The contact bridge 308 is disposed in the rotor bracket 302. The contact bridge 308 is rotated relative to the rotor bracket 302 by the first shaft 303, the second shaft 304, the third shaft 305, the first link 306 and the second link 307, and the contact bridge 308 Rotate between the initial pressure position and the maximum repulsion position.
  • the contact spring 309 is a single piece that is mounted on one side of the contact bridge 308 and is located within the rotor bracket 302.
  • the contact spring 309 of the second rotor component 300 is mounted on the left side of the contact bridge 308 (left side shown in Fig. 7).
  • the rotor bracket 302 includes two side plates 321 and two transverse shafts 322 connecting the two side plates.
  • the shape of the two side plates 321 is the same, and the spacing between the two side plates 321 is sufficient for the contact bridge 308 to pass through.
  • the two transverse axes 322 are centrally symmetrical.
  • the center of each of the side plates has a central through hole 331, each of which has a pair of centrally symmetric interlocking holes 332 and a pair of link slots 334, wherein a pair of interlocking holes 332 are disposed at both ends of the long side of the side plates.
  • a pair of link slots 334 are disposed at both ends of the short axis of the side plates.
  • the center through hole 331, the linkage hole 332, and the link slot 334 on the two side plates 321 are respectively aligned with each other for the shaft to pass through.
  • the first link 306 is respectively installed between the two side plates 321 and distributed on two sides of the contact bridge 308.
  • the first link 306 has a short shaft 363, and the short shaft 363 is installed in the connecting rod slot 334, which is short.
  • the shaft 363 is the center of rotation of the first link 306.
  • Figure 8 illustrates the structure of the first link.
  • the first link 306 includes a stem portion and two end planes extending laterally from both ends of the stem portion, each end plane having a raised short shaft 363 and a first shaft bore 364, a short shaft 363 and a first end
  • the shaft hole 364 is symmetrical about the stem in the end plane.
  • the stub shaft 363 is engaged with the link slot 334 with a slight clearance.
  • the rotor bracket 302 has a connecting rod groove and a spring groove on the two side plates 321 .
  • the groove depth of the connecting rod groove is not less than the thickness of the rod portion of the first connecting rod 306, and the rod portion is rotated when the first connecting rod 306 is rotated. Enter the connecting rod groove.
  • Two second links 307 are respectively installed between the two side plates 321 and distributed on the contact bridge 308. Both sides.
  • Figure 9 discloses the structure of the second link.
  • the second link 307 includes a rod portion and two end planes extending laterally from both ends of the rod portion, each end plane having a second shaft hole 371 and a third shaft hole 372, the second shaft hole 371 and the The triaxial holes 372 are symmetrical about the stem in the end plane.
  • the cross-sectional shape of the contact bridge 308 is center-symmetrical, and the center of the contact bridge has a waist-shaped hole 382.
  • the first shaft 303 passes through the waist-shaped hole 382 and slides along the groove length direction, and the first shaft 303 slides to one end of the waist-shaped hole.
  • the first shaft 303 serves as a center of rotation of the contact bridge 308.
  • the contact bridge has two centrally symmetrical curved surfaces 381 and two centrally symmetric through holes 383.
  • the two curved surfaces 381 respectively cooperate with the two lateral shafts 322 to define the contact bridge 308.
  • the two third shafts 305 pass through the two through holes 383, respectively.
  • Each side of the contact bridge 308 has two contacts, the contact welding contacts, the groove length direction of the waist hole 382 is at an angle with the line connecting the two contacts, and the angle is maintained on both sides of the contact bridge 308.
  • the contact pressure on the contacts is balanced.
  • Figure 10 illustrates the structure of the contact bridge.
  • the cylindrical surface of the transverse shaft 322 cooperates with the curved surface 381 on the contact bridge 308.
  • the two transverse shafts 322 respectively correspond to the initial pressure position and the maximum repulsion position of the contact bridge 308, and the cylindrical surface of the lateral shaft 322 is fitted with the curved surface 381 with a slight gap.
  • the first shaft 303 passes through the waist hole 382 of the contact bridge 308 and the center through hole 331 of the side plate 321 .
  • the first shaft 303 and the center through hole 331 are fitted with a slight gap.
  • the two second shafts 304 pass through the first link 306 and the second link 307, respectively, and are erected on the outer contours of the two side plates 321, and the two second shafts 304 are symmetrically distributed in the center.
  • the side plate 321 has a shaft hole groove 335.
  • the second shaft 304 passes through the first shaft hole 364 on the first link 306 and the second shaft hole 371 on the second link 307, and is mounted on the side plate 321
  • the shaft hole groove 335 is on.
  • the second shaft 304 is fitted with the first shaft hole 364 and the second shaft hole 371 with a slight clearance.
  • the two third shafts 305 respectively pass through the through holes 383 and the second links 307 of the contact bridge 308, and the two third shafts 305 are symmetrically distributed in the center.
  • the third shaft 305 passes through the third shaft hole 372 on the second link 307 and the third shaft 305 and the third shaft hole 372 are fitted with a slight clearance.
  • Both ends of a single contact spring 309 are mounted on the two second shafts 304, respectively.
  • the rotor holder 302 is further provided with spring grooves on the two side plates 321, and the contact springs 309 are movable in the spring grooves.
  • a single contact spring 309 is placed on the left side panel In the spring groove on the 321.
  • the first rotor component 400 shown in FIG. 6 is compared to the second rotor component 300 in that the position of the contact spring is different.
  • the contact spring is located on the right side (the right side shown in Fig. 6).
  • the present invention also provides three types of rotating shafts.
  • the three rotating shafts are respectively matched with different contact outer casings.
  • the first rotating shaft 501 is a thick rotating shaft that cooperates with the first contact outer casing 201 and the fourth contact outer casing 204.
  • the first rotating shaft 501, the first contact outer casing 201 and the fourth contact outer casing 204 are matched with each other by a strong mating boss, and the strong matching boss is in a horizontal step shape.
  • the second rotating shaft 502 and the third rotating shaft 503 are thinner rotating shafts that cooperate with the second contact outer casing 202 and the third contact outer casing 204.
  • the second rotating shaft 502, the third rotating shaft 503, the second contact outer casing 202, and the third contact outer casing 203 are matched with each other by a weakly strong matching boss, and the weak matching boss is inclined.
  • the second rotating shaft 502 is different from the third rotating shaft 503 in length, and the length of the second rotating shaft 502 is long so that the rotating shaft can extend beyond the contact outer casing, and the length of the third rotating shaft 503 is short so that the rotating shaft does not extend to the touch. Outside the head outer casing.
  • the first rotating shaft 501, the second rotating shaft 502 and the third rotating shaft 503 can all be connected to the linkage shaft to realize interconnection between the single pole switches.
  • the invention obtains three single-pole switches by combining four contact outer casings, two kinds of rotor components and three kinds of rotating shafts.
  • 3 is a block diagram showing the structure of a first single pole switch in a contact module of a circuit breaker in accordance with an embodiment of the present invention.
  • the first single pole switch 601 includes a first contact outer casing 201, a second contact outer casing 202, a first rotating shaft 501, a second rotating shaft 502, a first rotor member 400, a stationary contact 604, and an arc extinguishing chamber 605.
  • the first contact outer casing 201 is a strong side contact outer casing
  • the second contact outer casing 202 is a weak side contact outer casing
  • the first contact outer casing 201 and the second contact outer casing 202 are spliced together.
  • the cavity houses the first rotor component 400, the stationary contact 604, and the arc extinguishing chamber 605.
  • the inner cavity is biased toward the side of the second contact outer casing 202, and on the right side shown in Figs. 11 and 12, the contact springs in the first rotor component 400 are also located on the right side.
  • the first rotating shaft 501 is a thick rotating shaft, and cooperates with the first contact outer casing 201.
  • the second rotating shaft 502 is a thin rotating shaft, and cooperates with the second contact outer casing 502.
  • the length of the first rotating shaft 501 does not extend out.
  • the length of the second rotating shaft 502 extends beyond the second contact outer casing 202.
  • the second single pole switch 602 includes a third contact outer casing 203, a fourth contact outer casing 204, a first rotating shaft 501, a third rotating shaft 503, a second rotor member 300, a stationary contact 604, and an arc extinguishing chamber 605.
  • the third contact outer casing 203 is a weak-side contact outer casing having a symmetrical structure with the second contact outer casing 202
  • the fourth contact outer casing 204 is a strong-side contact outer casing
  • the body 201 has a symmetrical structure
  • the third contact outer casing 203 and the fourth contact outer casing 204 are spliced to form an inner cavity, and the inner cavity houses the second rotor component 300, the static contact 604 and the arc extinguishing chamber 605, and the second rotor component 300 has a symmetrical structure with the first rotor component 400, ie the contact springs are on different sides.
  • the inner cavity is biased toward the side of the third contact outer casing 203, and on the left side shown in Figs. 11 and 12, the contact springs in the second rotor component 300 are also located on the left side.
  • the first rotating shaft 501 is engaged with the fourth contact outer casing 204
  • the third rotating shaft 503 is a thin rotating shaft
  • the third rotating shaft 503 is engaged with the third contact outer casing 203
  • the length of the third rotating shaft 503 does not extend beyond the third contact. Outside the head outer casing 203, the length of the first rotating shaft 501 does not extend beyond the four-contact outer casing 204.
  • FIG. 5 is a block diagram showing the structure of a third single pole switch in a contact module of a circuit breaker according to an embodiment of the invention.
  • the third single pole switch 603 includes a third contact outer casing 203, a fourth contact outer casing 204, a first rotating shaft 501, a second rotating shaft 502, a second rotor member 300, a stationary contact 604, and an arc extinguishing chamber 605.
  • the third contact outer casing 203 is a weak-side contact outer casing having a symmetrical structure with the second contact outer casing 202
  • the fourth contact outer casing 204 is a strong-side contact outer casing
  • the body 201 has a symmetrical structure
  • the third contact outer casing 203 and the fourth contact outer casing 204 are spliced to form an inner cavity, and the inner cavity houses the second rotor component 300, the static contact 604 and the arc extinguishing chamber 605, and the second rotor component 300 has a symmetrical structure with the first rotor component 400, ie the contact springs are on different sides.
  • the inner cavity is biased toward the side of the third contact outer casing 203, and on the left side shown in Figs. 11 and 12, the contact springs in the second rotor component 300 are also located on the left side.
  • the first rotating shaft 501 is engaged with the fourth contact outer casing 204
  • the second rotating shaft 502 is engaged with the third contact outer casing 203.
  • the length of the first rotating shaft 501 does not extend beyond the fourth contact outer casing 204, and the second rotating shaft The length of 502 extends beyond the third contact outer casing 203.
  • the contact module 100 of the circuit breaker There are four single pole switches in total, two of which are a first single pole switch 601, a second single pole switch 602 and a third single pole switch 603.
  • FIG. 11 is a cross-sectional view showing the interconnection of the single-pole switches in the contact modules of the circuit breaker
  • FIG. 12 is a view showing the removal of the rotor components on the basis of FIG. A cross-sectional view of the shaft. From the left to right direction in the figure, there are two first single pole switches 601, one second single pole switch 602 and one third single pole switch 603.
  • the single pole switches are interconnected by interlocking shafts 606, and the linkage shaft 606 realizes interconnection between the first rotating shaft, the second rotating shaft and the third rotating shaft.
  • a strong mating boss 701 in a horizontal step shape and a weak mating boss 702 in an inclined shape can also be clearly shown.
  • the two first single pole switches 601 form the N phase and the A phase of the contact module
  • the operating mechanism 103 is coupled to the second single pole switch 602
  • the second single pole switch 602 constitutes the B phase of the contact module
  • the third monopole Switch 603 constitutes phase C of the contact module.
  • the contact module of the circuit breaker of the present invention controls the opening and closing of the circuit breaker by the operating mechanism.
  • the current flows through the static contact on one side, the rotor component, and the static touch on the other side.
  • the head and the tripping system rely on the tripping system to protect the circuit breaker when the circuit breaker is disconnected for a long time or when the current changes abnormally.
  • the contact module of the circuit breaker of the invention adopts an asymmetric design and a single contact spring, so that the width dimension of the circuit breaker is significantly reduced when multi-level interconnection, for example, the width of the four-stage circuit breaker is 100 mm, and the phase spacing is 25 mm.
  • the short-circuit breaking capacity is up to 400V, 150KA.
  • Similar products in the prior art in the case of the same short-circuit breaking capacity, due to the use of a symmetrical structure and a double-contact spring, the width of the four-stage circuit breaker is 120 mm, the phase spacing is 30 mm, and the width dimension is 20% larger than the present invention. 13 discloses a cross-sectional view of a prior art unidirectional switch interconnect using a symmetrical structure and a two-contact spring.
  • the present invention adopts an asymmetrical design.
  • the thickness of the housing on one side of the single pole switch is reduced, and the number of contact springs used for the rotor component is reduced to one, thereby ensuring the strength of the module.
  • the size of the contact module is reduced while maintaining the breaking current carrying capacity.

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  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

A contact module for a breaker comprises a substrate (101), an upper cover (102), an operation mechanism (103), three single-pole switches, and a tripping mechanism (104). The upper cover covers the substrate, and the upper cover and the substrate together form an accommodation space; the operation mechanism, the three single-pole switches, and the tripping mechanism are disposed inside the accommodation space. The operation mechanism is connected to one of the single-pole switches, and the tripping mechanism is connected to the three single-pole switches. The three single-pole switches are asymmetrical and each comprise a strong side and a weak side. A contact housing at the strong side of each single-pole switch is thick and is connected to a thick rotating shaft, and a contact housing at the weak side of each single-pole switch is thin and is connected to a thin rotating shaft. A rotor part of each single-pole switch only has a single-contact spring, and the single-contact spring is mounted at the weak side. The adjacent single-pole switches are connected to the rotating shaft by a linkage shaft and driven in a linked manner, and a strong side of one single-pole switch is adjacent to a weak side of the other single-pole switch.

Description

断路器的触头模块Contact module of circuit breaker 技术领域Technical field
本发明涉及断路器领域，更具体地说，涉及一种具有非对称结构的断路器的触头模块。This invention relates to the field of circuit breakers and, more particularly, to a contact module for a circuit breaker having an asymmetrical structure.
背景技术Background technique
众所周知双断点塑壳断路器的分断性能远优于单断点塑壳断路器，这其中的原因之一就是双断点塑壳断路器都是采取模块化结构，这种结构不仅装配方便而且绝缘性能很好，但是由于这种结构，使得断路器的每一级都要增加两个触头模块，又因为此类断路器需要承受很大的分断电流，即很强的气体冲击，所以触头模块还是要有很高的强度要求，这一点就要求断路器的触头模块需要有一定厚度，这就使得整个断路器很难缩小相间距，尤其是小壳架的产品，如100A、125A、160A，最终导致断路器变得很宽，而断路器的小型化一直是断路器的发展方向之一，于是，断路器的分断电流的承载力和断路器的尺寸之间成为了一对矛盾。It is well known that the double-breakpoint molded case circuit breaker has much better breaking performance than the single-breakpoint molded case circuit breaker. One of the reasons is that the double-breakpoint molded case circuit breaker adopts a modular structure, which is not only easy to assemble but also The insulation performance is very good, but due to this structure, two contact modules are added to each stage of the circuit breaker, and because such circuit breakers need to withstand a large breaking current, that is, a strong gas shock, so touch The head module still needs to have high strength requirements, which requires the contact module of the circuit breaker to have a certain thickness, which makes it difficult to reduce the phase spacing of the entire circuit breaker, especially for small frame products, such as 100A, 125A. The 160A eventually causes the circuit breaker to become very wide, and the miniaturization of the circuit breaker has always been one of the development directions of the circuit breaker. Therefore, the breaking force of the breaking current of the circuit breaker and the size of the circuit breaker become a contradiction. .
例如目前市面上的160A的产品，一般四级的断路器宽度要达到120mm，相间距为30mm，虽然能够承载较大电流，但是断路器尺寸过大，使得应用领域和安装受到很大限制。For example, the current 160A products on the market generally have a circuit breaker width of 120mm and a phase spacing of 30mm. Although it can carry a large current, the size of the circuit breaker is too large, which limits the application field and installation.
发明内容Summary of the invention
本发明旨在提出一种断路器的触头模块，兼顾分断电流承载力和触头模块的尺寸，通过非对称的设计和单个弹簧的应用，在维持分断电流承载力的情况下有效减小了触头模块的尺寸。The invention aims to propose a contact module of a circuit breaker, which takes into account the breaking current carrying capacity and the size of the contact module, and is effectively reduced in the case of maintaining the breaking current carrying capacity by the asymmetric design and the application of a single spring. The size of the contact module.
根据本发明的一实施例，提出一种断路器的触头模块，包括：基座、上盖、操作机构、三种单极开关和脱扣机构。上盖盖于基座上共同形成一容纳空间，操作机构、三种单极开关和脱扣机构设置在该容纳空间中。操 作机构与其中一种单极开关相联，脱扣机构连接到三种单极开关。三种单极开关均为非对称结构，包括强侧和弱侧，每一个单极开关强侧的触头外壳体加厚并且连接到较厚的转轴，每一个单极开关弱侧的触头外壳体较薄并且连接到较薄的转轴，每一个单极开关中的转子部件仅具有单个触头弹簧，单个触头弹簧安装在弱侧。相邻的单极开关由联动轴连接转轴而进行联动，并且其中一个单极开关的强侧与另一个单极开关的弱侧。According to an embodiment of the invention, a contact module of a circuit breaker is provided, comprising: a base, an upper cover, an operating mechanism, three single-pole switches and a tripping mechanism. The upper cover covers the accommodating space to form a receiving space, and the operating mechanism, three kinds of single-pole switches and the tripping mechanism are disposed in the accommodating space. Fuck The mechanism is associated with one of the single pole switches, and the trip mechanism is connected to the three single pole switches. The three unipolar switches are all asymmetric, including the strong side and the weak side. The contact housing on the strong side of each unipolar switch is thickened and connected to the thicker shaft. The contact on the weak side of each unipolar switch The outer casing is thin and connected to a thinner shaft, the rotor component in each single pole switch having only a single contact spring, and a single contact spring mounted on the weak side. The adjacent single pole switches are linked by the linkage shaft connecting the shafts, and the strong side of one of the single pole switches and the weak side of the other single pole switch.
在一个实施例中，三种单极开关中的每一种包括由两个触头外壳体拼接而成的外壳体模块、置于触头外壳体模块中的转子部件、连接转子部件和两个触头外壳体的两个转轴。两个触头外壳体拼接后内部形成内腔，转子部件安装在内腔中，强侧的触头外壳体在内腔部分的侧壁较厚而弱侧的触头外壳体在内腔部分的侧壁较薄。较厚的转轴与强侧的触头外壳体的内腔部分的侧壁配合，具有强配合凸台，较薄的转轴与弱侧的触头外壳体的内腔部分的侧壁配合，具有弱配合凸台。In one embodiment, each of the three single pole switches includes an outer shell module that is spliced from two contact outer shells, a rotor component that is placed in the contact outer shell module, a connecting rotor component, and two Two rotating shafts of the contact housing. The two contact outer casings are spliced to form an inner cavity, the rotor component is installed in the inner cavity, the strong side contact outer casing is thicker on the side wall of the inner cavity portion, and the weak outer contact outer casing is in the inner cavity portion. The side walls are thin. The thicker shaft cooperates with the side wall of the inner cavity portion of the strong side contact outer casing, and has a strong matching boss, and the thinner rotating shaft cooperates with the side wall of the inner cavity portion of the weak side contact outer casing, and has a weak Fit the boss.
在一个实施例中，强配合凸台呈水平台阶状，弱配合凸台呈倾斜状。In one embodiment, the strong mating boss is horizontally stepped and the weak mating boss is inclined.
在一个实施例中，三种单极开关包括第一单极开关、第二单极开关和第三单极开关。第一单极开关的数量为两个，构成触头模块的N相与A相，操作机构与第二单极开关相联，第二单极开关构成触头模块的B相，第三单极开关构成触头模块的C相。In one embodiment, the three single pole switches include a first single pole switch, a second single pole switch, and a third single pole switch. The number of the first single-pole switches is two, which constitutes the N-phase and the A-phase of the contact module, the operating mechanism is connected to the second single-pole switch, and the second single-pole switch constitutes the B-phase of the contact module, and the third monopole The switch constitutes the phase C of the contact module.
在一个实施例中，第一单极开关包括第一触头外壳体、第二触头外壳体、第一转轴、第二转轴、第一转子部件、静触头和灭弧室。第一触头外壳体是强侧的触头外壳体，第二触头外壳体是弱侧的触头外壳体，第一触头外壳体和第二触头外壳体拼接形成内腔，内腔中容纳第一转子部件、静触头和灭弧室。第一转轴是较厚的转轴，与第一触头外壳体配合，第二转轴是较薄的转轴，与第二触头外壳体配合，第一转轴的长度不延伸出第一触头外壳体之外，第二转轴的长度延伸出第二触头外壳体之外。In one embodiment, the first single pole switch includes a first contact housing, a second contact housing, a first shaft, a second shaft, a first rotor member, a stationary contact, and an arc chute. The first contact outer casing is a strong side contact outer casing, the second contact outer casing is a weak side contact outer casing, and the first contact outer casing and the second contact outer casing are spliced to form a inner cavity, the inner cavity The first rotor component, the stationary contact and the arc extinguishing chamber are accommodated therein. The first rotating shaft is a thick rotating shaft, and cooperates with the first contact outer casing, the second rotating shaft is a thin rotating shaft, and cooperates with the second contact outer casing, and the length of the first rotating shaft does not extend out of the first contact outer casing In addition, the length of the second shaft extends beyond the second contact housing.
在一个实施例中，第二单极开关包括第三触头外壳体、第四触头外壳体、第一转轴、第三转轴、第二转子部件、静触头和灭弧室。第三触头外 壳体是弱侧的触头外壳体，与第二触头外壳体具有对称结构，第四触头外壳体是强侧的触头外壳体，与第一触头外壳体具有对称结构，第三触头外壳体和第四触头外壳体拼接形成内腔，内腔中容纳第二转子部件、静触头和灭弧室，第二转子部件与第一转子部件具有对称结构。第一转轴与第四触头外壳体配合，第三转轴是较薄的转轴，第三转轴与第三触头外壳体配合，第三转轴的长度不延伸出第三触头外壳体之外，第一转轴的长度不延伸出四触头外壳体之外。In one embodiment, the second single pole switch includes a third contact housing, a fourth contact housing, a first shaft, a third shaft, a second rotor member, a stationary contact, and an arc chute. Outside the third contact The housing is a weak side contact housing body having a symmetrical structure with the second contact housing body, and the fourth contact housing body is a strong side contact housing body having a symmetrical structure with the first contact housing body, and a third The contact outer casing and the fourth contact outer casing are spliced to form an inner cavity, the inner cavity accommodating the second rotor component, the static contact and the arc extinguishing chamber, and the second rotor component and the first rotor component have a symmetrical structure. The first rotating shaft cooperates with the fourth contact outer casing, the third rotating shaft is a thin rotating shaft, the third rotating shaft is matched with the third contact outer casing, and the length of the third rotating shaft does not extend beyond the third contact outer casing, The length of the first shaft does not extend beyond the four-contact outer casing.
在一个实施例中，第三单极开关包括第三触头外壳体、第四触头外壳体、第一转轴、第二转轴、第二转子部件、静触头和灭弧室。第三触头外壳体是弱侧的触头外壳体，与第二触头外壳体具有对称结构，第四触头外壳体是强侧的触头外壳体，与第一触头外壳体具有对称结构，第三触头外壳体和第四触头外壳体拼接形成内腔，内腔中容纳第二转子部件、静触头和灭弧室，第二转子部件与第一转子部件具有对称结构。第一转轴与第四触头外壳体配合，第二转轴与第三触头外壳体配合，第一转轴的长度不延伸出第四触头外壳体之外，第二转轴的长度延伸出第三触头外壳体之外。In one embodiment, the third single pole switch includes a third contact outer casing, a fourth contact outer casing, a first rotating shaft, a second rotating shaft, a second rotor member, a stationary contact, and an arc extinguishing chamber. The third contact outer casing is a weak side contact outer casing, and has a symmetrical structure with the second contact outer casing, and the fourth contact outer casing is a strong side contact outer casing, and is symmetric with the first contact outer casing The structure, the third contact outer casing and the fourth contact outer casing are spliced to form an inner cavity, the inner cavity accommodating the second rotor component, the static contact and the arc extinguishing chamber, and the second rotor component and the first rotor component have a symmetrical structure. The first rotating shaft cooperates with the fourth contact outer casing body, and the second rotating shaft cooperates with the third contact outer casing body, the length of the first rotating shaft does not extend beyond the fourth contact outer casing body, and the length of the second rotating shaft extends out of the third Outside the contact housing.
本发明采用了非对称的设计，对于单极开关，将单极开关其中一侧的壳体厚度减小，并且将转子部件使用的触头弹簧的数量减少到一根，从而在保证模块强度，维持分断电流承载力的前提下减小了触头模块的尺寸。The present invention adopts an asymmetrical design. For a single pole switch, the thickness of the housing on one side of the single pole switch is reduced, and the number of contact springs used for the rotor component is reduced to one, thereby ensuring the strength of the module. The size of the contact module is reduced while maintaining the breaking current carrying capacity.
附图说明DRAWINGS
本发明上述的以及其他的特征、性质和优势将通过下面结合附图和实施例的描述而变的更加明显，在附图中相同的附图标记始终表示相同的特征，其中：The above and other features, aspects, and advantages of the present invention will become more apparent from the description of the appended claims appended claims
图1揭示了根据本发明的一实施例的断路器的结构示意图。FIG. 1 discloses a schematic structural view of a circuit breaker according to an embodiment of the present invention.
图2揭示了根据本发明的一实施例的断路器去除上盖和基座后的结构示意图。2 is a schematic view showing the structure of a circuit breaker after removing an upper cover and a base according to an embodiment of the present invention.
图3揭示了根据本发明的一实施例的断路器的触头模块中第一单极开 关的结构示意图。3 illustrates a first single pole opening in a contact module of a circuit breaker in accordance with an embodiment of the present invention. Schematic diagram of the structure.
图4揭示了根据本发明的一实施例的断路器的触头模块中第二单极开关的结构示意图。4 is a block diagram showing the structure of a second single pole switch in a contact module of a circuit breaker in accordance with an embodiment of the present invention.
图5揭示了根据本发明的一实施例的断路器的触头模块中第三单极开关的结构示意图。FIG. 5 is a block diagram showing the structure of a third single pole switch in a contact module of a circuit breaker according to an embodiment of the invention.
图6揭示了根据本发明的一实施例的断路器的触头模块中第一转子部件的结构示意图。6 is a block diagram showing the structure of a first rotor component in a contact module of a circuit breaker in accordance with an embodiment of the present invention.
图7揭示了根据本发明的一实施例的断路器的触头模块中第二转子部件的结构示意图。7 is a block diagram showing the structure of a second rotor component in a contact module of a circuit breaker in accordance with an embodiment of the present invention.
图8揭示了第二转子部件中第一连杆的结构示意图。Figure 8 discloses a schematic view of the structure of the first link in the second rotor component.
图9揭示了第二转子部件中第二连杆的结构示意图。Figure 9 discloses a schematic view of the structure of the second link in the second rotor component.
图10揭示了第二转子部件中触桥的结构示意图。Figure 10 discloses a schematic view of the structure of the contact bridge in the second rotor component.
图11揭示了根据本发明的一实施例的断路器的触头模块中的单极开关互联之后的剖视图。Figure 11 illustrates a cross-sectional view of a single pole switch interconnect in a contact module of a circuit breaker in accordance with an embodiment of the present invention.
图12是在图11的基础上去掉转子部件仅保留触头模块和转轴的剖视图。Figure 12 is a cross-sectional view showing the rotor module removed and only the contact module and the rotating shaft are removed on the basis of Figure 11.
图13揭示了现有技术的断路器的触头模块中使用的单极开关互联之后的剖视图。Figure 13 is a cross-sectional view showing the interconnection of the single pole switches used in the contact modules of the prior art circuit breakers.
具体实施方式detailed description
本发明采用非对称式的触头模块，将触头模块中转子部件的触头弹簧的数量减少到一根，并且使得触头模块两侧的侧壁厚度不同，从而在保证了模块强度的情况下减小了每一个单极开关的厚度，使得互联后的触头模块组成的整个断路器的宽度尺寸减小。The invention adopts an asymmetric contact module, reduces the number of contact springs of the rotor component in the contact module to one, and makes the thickness of the sidewalls on both sides of the contact module different, thereby ensuring the strength of the module. The thickness of each single pole switch is reduced, so that the width dimension of the entire circuit breaker composed of the interconnected contact modules is reduced.
参考图1和图2所示，本发明揭示了一种断路器的触头模块100，包括：基座101、上盖102、操作机构103、三种单极开关和脱扣机构104。 其中图1揭示了断路器的结构示意图，图2揭示了该断路器去除上盖102和基座101后的结构示意图。Referring to Figures 1 and 2, the present invention discloses a contact module 100 for a circuit breaker comprising: a base 101, an upper cover 102, an operating mechanism 103, three single pole switches and a trip mechanism 104. FIG. 1 discloses a schematic structural view of the circuit breaker, and FIG. 2 discloses a schematic structural view of the circuit breaker after removing the upper cover 102 and the base 101.
上盖102盖于基座101上共同形成一容纳空间，操作机构103、三种单极开关和脱扣机构104设置在该容纳空间中。操作机构103与其中一种单极开关相联，而脱扣机构104连接到所有的三种单极开关。三种单极开关均为非对称结构，包括强侧和弱侧，每一个单极开关强侧的触头外壳体加厚并且连接到较厚的转轴，每一个单极开关弱侧的触头外壳体较薄并且连接到较薄的转轴，每一个单极开关中的转子部件仅具有单个触头弹簧，单个触头弹簧安装在弱侧。相邻的单极开关由联动轴连接转轴而进行联动，并且其中一个单极开关的强侧与另一个单极开关的弱侧。The upper cover 102 covers the base 101 to form a receiving space, and the operating mechanism 103, three single-pole switches and the tripping mechanism 104 are disposed in the receiving space. The operating mechanism 103 is coupled to one of the single pole switches, and the trip mechanism 104 is coupled to all three of the single pole switches. The three unipolar switches are all asymmetric, including the strong side and the weak side. The contact housing on the strong side of each unipolar switch is thickened and connected to the thicker shaft. The contact on the weak side of each unipolar switch The outer casing is thin and connected to a thinner shaft, the rotor component in each single pole switch having only a single contact spring, and a single contact spring mounted on the weak side. The adjacent single pole switches are linked by the linkage shaft connecting the shafts, and the strong side of one of the single pole switches and the weak side of the other single pole switch.
三种单极开关中的每一种包括由两个触头外壳体拼接而成的外壳体模块、置于触头外壳体模块中的转子部件、连接转子部件和两个触头外壳体的两个转轴。两个触头外壳体拼接后内部形成内腔，转子部件安装在内腔中，强侧的触头外壳体在内腔部分的侧壁较厚而弱侧的触头外壳体在内腔部分的侧壁较薄。较厚的转轴与强侧的触头外壳体的内腔部分的侧壁配合，具有强配合凸台，较薄的转轴与弱侧的触头外壳体的内腔部分的侧壁配合，具有弱配合凸台。Each of the three unipolar switches includes an outer casing module formed by splicing two contact outer casings, a rotor component disposed in the contact outer casing module, two connecting rotor components and two contact outer casings A shaft. The two contact outer casings are spliced to form an inner cavity, the rotor component is installed in the inner cavity, the strong side contact outer casing is thicker on the side wall of the inner cavity portion, and the weak outer contact outer casing is in the inner cavity portion. The side walls are thin. The thicker shaft cooperates with the side wall of the inner cavity portion of the strong side contact outer casing, and has a strong matching boss, and the thinner rotating shaft cooperates with the side wall of the inner cavity portion of the weak side contact outer casing, and has a weak Fit the boss.
本发明中，提供四种触头外壳体，分别是第一触头外壳体201、第二触头外壳体202、第三触头外壳体203和第四触头外壳体204。第一触头外壳体201和第二触头外壳体202相匹配并且相互拼接，第三触头外壳体203和第四触头外壳体204相匹配并且相互拼接。第一触头外壳体201和第四触头外壳体204具有互相对称的结构，第一触头外壳体201和第四触头外壳体204都是强侧的触头外壳体，侧壁较厚。第二触头外壳体202和第三触头外壳体203具有互相对称的结构，第二触头外壳体202和第三触头外壳体203都是弱侧的触头外壳体，侧壁较薄。在进行拼接之后所形成的外壳体模块中，内腔并不是位于正中间的位置，而是会偏向于弱侧。In the present invention, four contact outer casings are provided, which are a first contact outer casing 201, a second contact outer casing 202, a third contact outer casing 203, and a fourth contact outer casing 204, respectively. The first contact outer casing 201 and the second contact outer casing 202 are matched and spliced to each other, and the third contact outer casing 203 and the fourth contact outer casing 204 are matched and spliced to each other. The first contact outer casing 201 and the fourth contact outer casing 204 have mutually symmetrical structures, and the first contact outer casing 201 and the fourth contact outer casing 204 are both strong side contact outer casings, and the side walls are thick. . The second contact outer casing 202 and the third contact outer casing 203 have mutually symmetrical structures, and the second contact outer casing 202 and the third contact outer casing 203 are both weak side contact outer casings, and the side walls are thin. . In the outer casing module formed after the splicing, the inner cavity is not located in the middle, but is biased toward the weak side.
本发明还提供两种转子部件，图6揭示了根据本发明的一实施例的断 路器的触头模块中第一转子部件的结构示意图，而图7揭示了根据本发明的一实施例的断路器的触头模块中第二转子部件的结构示意图。第一转子部件和第二转子部件的区别仅在于触头弹簧的位置。下面以第二转子部件为例进行说明。The present invention also provides two rotor components, and Figure 6 discloses a break in accordance with an embodiment of the present invention. A schematic diagram of the structure of the first rotor component in the contact module of the circuit breaker, and FIG. 7 discloses a structural schematic diagram of the second rotor component in the contact module of the circuit breaker according to an embodiment of the present invention. The first rotor component and the second rotor component differ only in the position of the contact spring. Hereinafter, the second rotor member will be described as an example.
参考图7所示，第二转子部件300包括：转子支架302、第一轴303、第二轴304、第三轴305、第一连杆306、第二连杆307、触桥308和触头弹簧309。触桥308设置在转子支架302中，触桥308通过第一轴303、第二轴304、第三轴305、第一连杆306和第二连杆307相对于转子支架302转动，触桥308在初压力位置和最大斥开位置之间转动。触头弹簧309为单个，安装在触桥308的一侧，位于转子支架302内。第二转子部件300的触头弹簧309安装在触桥308的左侧(图7中所示的左侧)。Referring to FIG. 7, the second rotor component 300 includes a rotor bracket 302, a first shaft 303, a second shaft 304, a third shaft 305, a first link 306, a second link 307, a contact bridge 308, and a contact. Spring 309. The contact bridge 308 is disposed in the rotor bracket 302. The contact bridge 308 is rotated relative to the rotor bracket 302 by the first shaft 303, the second shaft 304, the third shaft 305, the first link 306 and the second link 307, and the contact bridge 308 Rotate between the initial pressure position and the maximum repulsion position. The contact spring 309 is a single piece that is mounted on one side of the contact bridge 308 and is located within the rotor bracket 302. The contact spring 309 of the second rotor component 300 is mounted on the left side of the contact bridge 308 (left side shown in Fig. 7).
转子支架302包括两个侧板321和连接两个侧板的两个横向轴322，两个侧板321的形状大小相一致，两个侧板321之间的间距足以使得触桥308穿过，两个横向轴322中心对称。每一个侧板的中心具有中心通孔331，每一个侧板上具有中心对称的一对联动孔332和一对连杆槽孔334，其中一对联动孔332布置在侧板的长轴两端而一对连杆槽孔334布置在侧板的短轴两端。两个侧板321上的中心通孔331、联动孔332、连杆槽孔334分别互相对准，以供轴穿过。The rotor bracket 302 includes two side plates 321 and two transverse shafts 322 connecting the two side plates. The shape of the two side plates 321 is the same, and the spacing between the two side plates 321 is sufficient for the contact bridge 308 to pass through. The two transverse axes 322 are centrally symmetrical. The center of each of the side plates has a central through hole 331, each of which has a pair of centrally symmetric interlocking holes 332 and a pair of link slots 334, wherein a pair of interlocking holes 332 are disposed at both ends of the long side of the side plates. A pair of link slots 334 are disposed at both ends of the short axis of the side plates. The center through hole 331, the linkage hole 332, and the link slot 334 on the two side plates 321 are respectively aligned with each other for the shaft to pass through.
两个第一连杆306分别安装在两个侧板321之间，分布在触桥308的两边，第一连杆306上具有短轴363，短轴363安装在连杆槽孔334中，短轴363是第一连杆306的转动中心。图8揭示了第一连杆的结构。第一连杆306包括杆部和由杆部的两端横向延伸的两个端平面，每一个端平面上具有一个凸起的短轴363和一个第一轴孔364，短轴363和第一轴孔364在端平面上关于杆部对称。短轴363与连杆槽孔334以微小间隙配合。转子支架302在两个侧板321上开有连杆凹槽和弹簧凹槽，连杆凹槽的槽深不小于第一连杆306的杆部的厚度，第一连杆306转动时杆部进入连杆凹槽中。Two first links 306 are respectively installed between the two side plates 321 and distributed on two sides of the contact bridge 308. The first link 306 has a short shaft 363, and the short shaft 363 is installed in the connecting rod slot 334, which is short. The shaft 363 is the center of rotation of the first link 306. Figure 8 illustrates the structure of the first link. The first link 306 includes a stem portion and two end planes extending laterally from both ends of the stem portion, each end plane having a raised short shaft 363 and a first shaft bore 364, a short shaft 363 and a first end The shaft hole 364 is symmetrical about the stem in the end plane. The stub shaft 363 is engaged with the link slot 334 with a slight clearance. The rotor bracket 302 has a connecting rod groove and a spring groove on the two side plates 321 . The groove depth of the connecting rod groove is not less than the thickness of the rod portion of the first connecting rod 306, and the rod portion is rotated when the first connecting rod 306 is rotated. Enter the connecting rod groove.
两个第二连杆307分别安装在两个侧板321之间，分布在触桥308的 两边。图9揭示了第二连杆的结构。第二连杆307包括杆部和由杆部的两端横向延伸的两个端平面，每一个端平面上具有一个第二轴孔371和一个第三轴孔372，第二轴孔371和第三轴孔372在端平面上关于杆部对称。Two second links 307 are respectively installed between the two side plates 321 and distributed on the contact bridge 308. Both sides. Figure 9 discloses the structure of the second link. The second link 307 includes a rod portion and two end planes extending laterally from both ends of the rod portion, each end plane having a second shaft hole 371 and a third shaft hole 372, the second shaft hole 371 and the The triaxial holes 372 are symmetrical about the stem in the end plane.
触桥308的截面形状为中心对称，触桥的中心具有腰形孔382，第一轴303穿过腰形孔382且沿槽长方向滑动，第一轴303滑动至腰形孔的其中一端时，第一轴303作为触桥308的转动中心，触桥上具有两个中心对称的曲面381和两个中心对称的通孔383，两个曲面381分别与两个横向轴322配合限定触桥308的转动位置，两个第三轴305分别穿过两个通孔383。触桥308的每一侧上具有两个触点，触点焊接触头，腰形孔382的槽长方向与两个触点的连线呈一夹角，夹角维持触桥308两侧的触点上的接触压力平衡。图10揭示了触桥的结构。横向轴322的圆柱面与触桥308上的曲面381配合，两个横向轴322分别对应触桥308的初压力位置和最大斥开位置，横向轴322的圆柱面与曲面381以微小间隙配合。The cross-sectional shape of the contact bridge 308 is center-symmetrical, and the center of the contact bridge has a waist-shaped hole 382. The first shaft 303 passes through the waist-shaped hole 382 and slides along the groove length direction, and the first shaft 303 slides to one end of the waist-shaped hole. The first shaft 303 serves as a center of rotation of the contact bridge 308. The contact bridge has two centrally symmetrical curved surfaces 381 and two centrally symmetric through holes 383. The two curved surfaces 381 respectively cooperate with the two lateral shafts 322 to define the contact bridge 308. In the rotational position, the two third shafts 305 pass through the two through holes 383, respectively. Each side of the contact bridge 308 has two contacts, the contact welding contacts, the groove length direction of the waist hole 382 is at an angle with the line connecting the two contacts, and the angle is maintained on both sides of the contact bridge 308. The contact pressure on the contacts is balanced. Figure 10 illustrates the structure of the contact bridge. The cylindrical surface of the transverse shaft 322 cooperates with the curved surface 381 on the contact bridge 308. The two transverse shafts 322 respectively correspond to the initial pressure position and the maximum repulsion position of the contact bridge 308, and the cylindrical surface of the lateral shaft 322 is fitted with the curved surface 381 with a slight gap.
第一轴303穿过触桥308的腰形孔382和侧板321的中心通孔331。第一轴303与中心通孔331以微小间隙配合。两个第二轴304分别穿过第一连杆306和第二连杆307并架设在两个侧板321的外轮廓上，两个第二轴304以中心对称分布。侧板321上具有轴孔凹槽335，第二轴304穿过第一连杆306上的第一轴孔364和第二连杆307上的第二轴孔371，并架设于侧板321上的轴孔凹槽335上。第二轴304与第一轴孔364、第二轴孔371均以微小间隙配合。The first shaft 303 passes through the waist hole 382 of the contact bridge 308 and the center through hole 331 of the side plate 321 . The first shaft 303 and the center through hole 331 are fitted with a slight gap. The two second shafts 304 pass through the first link 306 and the second link 307, respectively, and are erected on the outer contours of the two side plates 321, and the two second shafts 304 are symmetrically distributed in the center. The side plate 321 has a shaft hole groove 335. The second shaft 304 passes through the first shaft hole 364 on the first link 306 and the second shaft hole 371 on the second link 307, and is mounted on the side plate 321 The shaft hole groove 335 is on. The second shaft 304 is fitted with the first shaft hole 364 and the second shaft hole 371 with a slight clearance.
两个第三轴305分别穿过触桥308的通孔383和第二连杆307，两个第三轴305以中心对称分布。第三轴305穿过第二连杆307上的第三轴孔372且第三轴305与第三轴孔372以微小间隙配合。The two third shafts 305 respectively pass through the through holes 383 and the second links 307 of the contact bridge 308, and the two third shafts 305 are symmetrically distributed in the center. The third shaft 305 passes through the third shaft hole 372 on the second link 307 and the third shaft 305 and the third shaft hole 372 are fitted with a slight clearance.
单个的触头弹簧309的两端分别安装在两个第二轴304上。转子支架302在两个侧板321上还开有弹簧凹槽，触头弹簧309能在弹簧凹槽中移动。对于第二转子部件300来说，单个的触头弹簧309放置在左侧的侧板 321上的弹簧凹槽中。Both ends of a single contact spring 309 are mounted on the two second shafts 304, respectively. The rotor holder 302 is further provided with spring grooves on the two side plates 321, and the contact springs 309 are movable in the spring grooves. For the second rotor component 300, a single contact spring 309 is placed on the left side panel In the spring groove on the 321.
图6所示的第一转子部件400与第二转子部件300相比较，区别就在于触头弹簧的位置。在第一转子部件400中，触头弹簧位于右侧(图6所示的右侧)。The first rotor component 400 shown in FIG. 6 is compared to the second rotor component 300 in that the position of the contact spring is different. In the first rotor component 400, the contact spring is located on the right side (the right side shown in Fig. 6).
本发明还提供三种转轴。三种转轴分别与不同的触头外壳体配合。第一转轴501是较厚的转轴，与第一触头外壳体201以及第四触头外壳体204配合。第一转轴501、第一触头外壳体201和第四触头外壳体204通过强配合凸台互相匹配，强配合凸台是呈水平台阶状。第二转轴502和第三转轴503是较薄的转轴，与第二触头外壳体202以及第三触头外壳体204配合。第二转轴502、第三转轴503和第二触头外壳体202、第三触头外壳体203通过弱强配合凸台互相匹配，弱配合凸台呈倾斜状。第二转轴502与第三转轴503的区别在于长度，第二转轴502的长度较长使得转轴能够延伸到触头外壳体之外，而第三转轴503的长度较短使得转轴不会延伸到触头外壳体之外。第一转轴501、第二转轴502和第三转轴503都能够与联动轴连接，实现单极开关之间的互联。The present invention also provides three types of rotating shafts. The three rotating shafts are respectively matched with different contact outer casings. The first rotating shaft 501 is a thick rotating shaft that cooperates with the first contact outer casing 201 and the fourth contact outer casing 204. The first rotating shaft 501, the first contact outer casing 201 and the fourth contact outer casing 204 are matched with each other by a strong mating boss, and the strong matching boss is in a horizontal step shape. The second rotating shaft 502 and the third rotating shaft 503 are thinner rotating shafts that cooperate with the second contact outer casing 202 and the third contact outer casing 204. The second rotating shaft 502, the third rotating shaft 503, the second contact outer casing 202, and the third contact outer casing 203 are matched with each other by a weakly strong matching boss, and the weak matching boss is inclined. The second rotating shaft 502 is different from the third rotating shaft 503 in length, and the length of the second rotating shaft 502 is long so that the rotating shaft can extend beyond the contact outer casing, and the length of the third rotating shaft 503 is short so that the rotating shaft does not extend to the touch. Outside the head outer casing. The first rotating shaft 501, the second rotating shaft 502 and the third rotating shaft 503 can all be connected to the linkage shaft to realize interconnection between the single pole switches.
本发明通过四种触头外壳体、两种转子部件和三种转轴组合得到三种单极开关。图3揭示了根据本发明的一实施例的断路器的触头模块中第一单极开关的结构示意图。第一单极开关601包括第一触头外壳体201、第二触头外壳体202、第一转轴501、第二转轴502、第一转子部件400、静触头604和灭弧室605。第一触头外壳体201是强侧的触头外壳体，第二触头外壳体202是弱侧的触头外壳体，第一触头外壳体201和第二触头外壳体202拼接形成内腔，内腔中容纳第一转子部件400、静触头604和灭弧室605。内腔偏向于第二触头外壳体202一侧，在图11和图12中所示的右侧，第一转子部件400中的触头弹簧同样位于右侧。第一转轴501是较厚的转轴，与第一触头外壳体201配合，第二转轴502是较薄的转轴，与第二触头外壳体502配合，第一转轴501的长度不延伸出第一触头外壳体201之外，第二转轴502的长度延伸出第二触头外壳体202之外。 The invention obtains three single-pole switches by combining four contact outer casings, two kinds of rotor components and three kinds of rotating shafts. 3 is a block diagram showing the structure of a first single pole switch in a contact module of a circuit breaker in accordance with an embodiment of the present invention. The first single pole switch 601 includes a first contact outer casing 201, a second contact outer casing 202, a first rotating shaft 501, a second rotating shaft 502, a first rotor member 400, a stationary contact 604, and an arc extinguishing chamber 605. The first contact outer casing 201 is a strong side contact outer casing, the second contact outer casing 202 is a weak side contact outer casing, and the first contact outer casing 201 and the second contact outer casing 202 are spliced together. The cavity houses the first rotor component 400, the stationary contact 604, and the arc extinguishing chamber 605. The inner cavity is biased toward the side of the second contact outer casing 202, and on the right side shown in Figs. 11 and 12, the contact springs in the first rotor component 400 are also located on the right side. The first rotating shaft 501 is a thick rotating shaft, and cooperates with the first contact outer casing 201. The second rotating shaft 502 is a thin rotating shaft, and cooperates with the second contact outer casing 502. The length of the first rotating shaft 501 does not extend out. In addition to a contact outer casing 201, the length of the second rotating shaft 502 extends beyond the second contact outer casing 202.
图4揭示了根据本发明的一实施例的断路器的触头模块中第二单极开关的结构示意图。第二单极开关602包括第三触头外壳体203、第四触头外壳体204、第一转轴501、第三转轴503、第二转子部件300、静触头604和灭弧室605。第三触头外壳体203是弱侧的触头外壳体，与第二触头外壳体202具有对称结构，第四触头外壳体204是强侧的触头外壳体，与第一触头外壳体201具有对称结构，第三触头外壳体203和第四触头外壳体204拼接形成内腔，内腔中容纳第二转子部件300、静触头604和灭弧室605，第二转子部件300与第一转子部件400具有对称结构，即触头弹簧是位于不同侧。内腔偏向于第三触头外壳体203一侧，在图11和图12中所示的左侧，第二转子部件300中的触头弹簧同样位于左侧。第一转轴501与第四触头外壳体204配合，第三转轴503是较薄的转轴，第三转轴503与第三触头外壳体203配合，第三转轴503的长度不延伸出第三触头外壳体203之外，第一转轴501的长度不延伸出四触头外壳体204之外。4 is a block diagram showing the structure of a second single pole switch in a contact module of a circuit breaker in accordance with an embodiment of the present invention. The second single pole switch 602 includes a third contact outer casing 203, a fourth contact outer casing 204, a first rotating shaft 501, a third rotating shaft 503, a second rotor member 300, a stationary contact 604, and an arc extinguishing chamber 605. The third contact outer casing 203 is a weak-side contact outer casing having a symmetrical structure with the second contact outer casing 202, and the fourth contact outer casing 204 is a strong-side contact outer casing, and the first contact outer casing The body 201 has a symmetrical structure, and the third contact outer casing 203 and the fourth contact outer casing 204 are spliced to form an inner cavity, and the inner cavity houses the second rotor component 300, the static contact 604 and the arc extinguishing chamber 605, and the second rotor component 300 has a symmetrical structure with the first rotor component 400, ie the contact springs are on different sides. The inner cavity is biased toward the side of the third contact outer casing 203, and on the left side shown in Figs. 11 and 12, the contact springs in the second rotor component 300 are also located on the left side. The first rotating shaft 501 is engaged with the fourth contact outer casing 204, the third rotating shaft 503 is a thin rotating shaft, the third rotating shaft 503 is engaged with the third contact outer casing 203, and the length of the third rotating shaft 503 does not extend beyond the third contact. Outside the head outer casing 203, the length of the first rotating shaft 501 does not extend beyond the four-contact outer casing 204.
图5揭示了根据本发明的一实施例的断路器的触头模块中第三单极开关的结构示意图。第三单极开关603包括第三触头外壳体203、第四触头外壳体204、第一转轴501、第二转轴502、第二转子部件300、静触头604和灭弧室605。第三触头外壳体203是弱侧的触头外壳体，与第二触头外壳体202具有对称结构，第四触头外壳体204是强侧的触头外壳体，与第一触头外壳体201具有对称结构，第三触头外壳体203和第四触头外壳体204拼接形成内腔，内腔中容纳第二转子部件300、静触头604和灭弧室605，第二转子部件300与第一转子部件400具有对称结构，即触头弹簧是位于不同侧。内腔偏向于第三触头外壳体203一侧，在图11和图12中所示的左侧，第二转子部件300中的触头弹簧同样位于左侧。第一转轴501与第四触头外壳体204配合，第二转轴502与第三触头外壳体203配合，第一转轴501的长度不延伸出第四触头外壳体204之外，第二转轴502的长度延伸出第三触头外壳体203之外。FIG. 5 is a block diagram showing the structure of a third single pole switch in a contact module of a circuit breaker according to an embodiment of the invention. The third single pole switch 603 includes a third contact outer casing 203, a fourth contact outer casing 204, a first rotating shaft 501, a second rotating shaft 502, a second rotor member 300, a stationary contact 604, and an arc extinguishing chamber 605. The third contact outer casing 203 is a weak-side contact outer casing having a symmetrical structure with the second contact outer casing 202, and the fourth contact outer casing 204 is a strong-side contact outer casing, and the first contact outer casing The body 201 has a symmetrical structure, and the third contact outer casing 203 and the fourth contact outer casing 204 are spliced to form an inner cavity, and the inner cavity houses the second rotor component 300, the static contact 604 and the arc extinguishing chamber 605, and the second rotor component 300 has a symmetrical structure with the first rotor component 400, ie the contact springs are on different sides. The inner cavity is biased toward the side of the third contact outer casing 203, and on the left side shown in Figs. 11 and 12, the contact springs in the second rotor component 300 are also located on the left side. The first rotating shaft 501 is engaged with the fourth contact outer casing 204, and the second rotating shaft 502 is engaged with the third contact outer casing 203. The length of the first rotating shaft 501 does not extend beyond the fourth contact outer casing 204, and the second rotating shaft The length of 502 extends beyond the third contact outer casing 203.
参考图2、图11和图12。在一个实施例中，在断路器的触头模块100 中一共具有四个单极开关，其中两个是第一单极开关601、一个第二单极开关602和一个第三单极开关603。如图2、图11和图12所示，图11揭示了断路器的触头模块中的单极开关互联之后的剖视图，图12是在图11的基础上去掉转子部件仅保留触头模块和转轴的剖视图。从图中由左至右的方向，依次为两个第一单极开关601、一个第二单极开关602和一个第三单极开关603。单极开关之间通过联动轴606互相连接实现互联，联动轴606实现第一转轴、第二转轴以及第三转轴之间的互联。在图12中，还能够清楚地展示呈水平台阶状的强配合凸台701和呈倾斜状的弱配合凸台702。两个第一单极开关601构成触头模块的N相与A相，操作机构103与第二单极开关602相联，第二单极开关602构成触头模块的B相，第三单极开关603构成触头模块的C相。Refer to Figures 2, 11 and 12. In one embodiment, the contact module 100 of the circuit breaker There are four single pole switches in total, two of which are a first single pole switch 601, a second single pole switch 602 and a third single pole switch 603. As shown in FIG. 2, FIG. 11, and FIG. 12, FIG. 11 is a cross-sectional view showing the interconnection of the single-pole switches in the contact modules of the circuit breaker, and FIG. 12 is a view showing the removal of the rotor components on the basis of FIG. A cross-sectional view of the shaft. From the left to right direction in the figure, there are two first single pole switches 601, one second single pole switch 602 and one third single pole switch 603. The single pole switches are interconnected by interlocking shafts 606, and the linkage shaft 606 realizes interconnection between the first rotating shaft, the second rotating shaft and the third rotating shaft. In Fig. 12, a strong mating boss 701 in a horizontal step shape and a weak mating boss 702 in an inclined shape can also be clearly shown. The two first single pole switches 601 form the N phase and the A phase of the contact module, the operating mechanism 103 is coupled to the second single pole switch 602, and the second single pole switch 602 constitutes the B phase of the contact module, the third monopole Switch 603 constitutes phase C of the contact module.
本发明的断路器的触头模块由操作机构控制断路器的通断，当断路器处在接通状态下时，电流依次流过一侧的静触头、转子部件、另一侧的静触头、脱扣***，依靠脱扣***使断路器在长时间过载或者电流发生异常变化时使断路器断开从而起到保护作用。The contact module of the circuit breaker of the present invention controls the opening and closing of the circuit breaker by the operating mechanism. When the circuit breaker is in the ON state, the current flows through the static contact on one side, the rotor component, and the static touch on the other side. The head and the tripping system rely on the tripping system to protect the circuit breaker when the circuit breaker is disconnected for a long time or when the current changes abnormally.
本发明的断路器的触头模块通过采用非对称设计和单个的触头弹簧，使得多级互联时断路器的宽度尺寸显著降低，比如四级的断路器宽度为100mm，相间距为25mm，而运行短路分断能力为达到400V，150KA。现有技术中的同类产品，在短路分断能力相同的情况下，由于采用对称结构和双触头弹簧，四级的断路器宽度为120mm，相间距30mm，宽度尺寸比本发明大20％，图13揭示了现有技术中采用对称结构和双触头弹簧的单极开关互联之后的剖视图。The contact module of the circuit breaker of the invention adopts an asymmetric design and a single contact spring, so that the width dimension of the circuit breaker is significantly reduced when multi-level interconnection, for example, the width of the four-stage circuit breaker is 100 mm, and the phase spacing is 25 mm. The short-circuit breaking capacity is up to 400V, 150KA. Similar products in the prior art, in the case of the same short-circuit breaking capacity, due to the use of a symmetrical structure and a double-contact spring, the width of the four-stage circuit breaker is 120 mm, the phase spacing is 30 mm, and the width dimension is 20% larger than the present invention. 13 discloses a cross-sectional view of a prior art unidirectional switch interconnect using a symmetrical structure and a two-contact spring.
本发明采用了非对称的设计，对于单极开关，将单极开关其中一侧的壳体厚度减小，并且将转子部件使用的触头弹簧的数量减少到一根，从而在保证模块强度，维持分断电流承载力的前提下减小了触头模块的尺寸。The present invention adopts an asymmetrical design. For a single pole switch, the thickness of the housing on one side of the single pole switch is reduced, and the number of contact springs used for the rotor component is reduced to one, thereby ensuring the strength of the module. The size of the contact module is reduced while maintaining the breaking current carrying capacity.
上述实施例是提供给熟悉本领域内的人员来实现或使用本发明的，熟悉本领域的人员可在不脱离本发明的发明思想的情况下，对上述实施例做 出种种修改或变化，因而本发明的保护范围并不被上述实施例所限，而应该是符合权利要求书提到的创新性特征的最大范围。 The above embodiments are provided to those skilled in the art to implement or use the present invention. Those skilled in the art can make the above embodiments without departing from the inventive concept of the present invention. Various modifications and changes are possible, and thus the scope of the present invention is not limited by the embodiments described above, but should be the maximum range of the innovative features mentioned in the claims.

Claims (7)

  1. 一种断路器的触头模块，其特征在于，包括：基座、上盖、操作机构、三种单极开关和脱扣机构；A contact module for a circuit breaker, comprising: a base, an upper cover, an operating mechanism, three single-pole switches and a tripping mechanism;
    上盖盖于基座上共同形成一容纳空间，所述操作机构、三种单极开关和脱扣机构设置在该容纳空间中；The upper cover is formed on the base to form a receiving space, and the operating mechanism, three single-pole switches and the tripping mechanism are disposed in the receiving space;
    所述操作机构与其中一种单极开关相联，所述脱扣机构连接到所述三种单极开关；The operating mechanism is coupled to one of the single pole switches, and the trip mechanism is coupled to the three single pole switches;
    所述三种单极开关均为非对称结构，包括强侧和弱侧，每一个单极开关强侧的触头外壳体加厚并且连接到较厚的转轴，每一个单极开关弱侧的触头外壳体较薄并且连接到较薄的转轴，每一个单极开关中的转子部件仅具有单个触头弹簧，单个触头弹簧安装在弱侧；The three unipolar switches are all asymmetric structures, including a strong side and a weak side, and the contact outer casing of each unipolar switch strong side is thickened and connected to a thicker rotating shaft, and the weak side of each unipolar switch The contact outer casing is thin and connected to a thinner rotating shaft, the rotor component in each single pole switch has only a single contact spring, and a single contact spring is mounted on the weak side;
    相邻的单极开关由联动轴连接转轴而进行联动，并且其中一个单极开关的强侧与另一个单极开关的弱侧。The adjacent single pole switches are linked by the linkage shaft connecting the shafts, and the strong side of one of the single pole switches and the weak side of the other single pole switch.
  2. 如权利要求1所述的断路器的触头模块，其特征在于，所述三种单极开关中的每一种包括由两个触头外壳体拼接而成的外壳体模块、置于触头外壳体模块中的转子部件、连接转子部件和两个触头外壳体的两个转轴；A contact module for a circuit breaker according to claim 1, wherein each of said three single-pole switches comprises an outer casing module formed by splicing two contact outer casings, and is placed in the contact a rotor component in the outer casing module, two rotating shafts connecting the rotor component and the two contact outer casings;
    两个触头外壳体拼接后内部形成内腔，转子部件安装在内腔中，强侧的触头外壳体在内腔部分的侧壁较厚而弱侧的触头外壳体在内腔部分的侧壁较薄；The two contact outer casings are spliced to form an inner cavity, the rotor component is installed in the inner cavity, the strong side contact outer casing is thicker on the side wall of the inner cavity portion, and the weak outer contact outer casing is in the inner cavity portion. Thin side walls;
    较厚的转轴与强侧的触头外壳体的内腔部分的侧壁配合，具有强配合凸台，较薄的转轴与弱侧的触头外壳体的内腔部分的侧壁配合，具有弱配合凸台。The thicker shaft cooperates with the side wall of the inner cavity portion of the strong side contact outer casing, and has a strong matching boss, and the thinner rotating shaft cooperates with the side wall of the inner cavity portion of the weak side contact outer casing, and has a weak Fit the boss.
  3. 如权利要求2所述的断路器的触头模块，其特征在于，所述强配合凸台呈水平台阶状，所述弱配合凸台呈倾斜状。 The contact module of the circuit breaker according to claim 2, wherein the strong mating boss is horizontally stepped, and the weak mating boss is inclined.
  4. 如权利要求2所述的断路器的触头模块，其特征在于，所述三种单极开关包括第一单极开关、第二单极开关和第三单极开关；The contact module of a circuit breaker according to claim 2, wherein said three single pole switches comprise a first single pole switch, a second single pole switch and a third single pole switch;
    第一单极开关的数量为两个，构成所述触头模块的N相与A相，操作机构与第二单极开关相联，第二单极开关构成所述触头模块的B相，第三单极开关构成所述触头模块的C相。The number of the first single-pole switches is two, which constitutes the N-phase and the A-phase of the contact module, the operating mechanism is connected to the second single-pole switch, and the second single-pole switch constitutes the B-phase of the contact module. A third single pole switch forms the phase C of the contact module.
  5. 如权利要求4所述的断路器的触头模块，其特征在于，所述第一单极开关包括第一触头外壳体、第二触头外壳体、第一转轴、第二转轴、第一转子部件、静触头和灭弧室；The contact module of a circuit breaker according to claim 4, wherein the first single pole switch comprises a first contact outer casing body, a second contact outer casing body, a first rotating shaft, a second rotating shaft, and a first Rotor component, static contact and arc extinguishing chamber;
    第一触头外壳体是强侧的触头外壳体，第二触头外壳体是弱侧的触头外壳体，第一触头外壳体和第二触头外壳体拼接形成内腔，内腔中容纳第一转子部件、静触头和灭弧室；The first contact outer casing is a strong side contact outer casing, the second contact outer casing is a weak side contact outer casing, and the first contact outer casing and the second contact outer casing are spliced to form a inner cavity, the inner cavity Accommodating a first rotor component, a static contact and an arc extinguishing chamber;
    第一转轴是较厚的转轴，与第一触头外壳体配合，第二转轴是较薄的转轴，与第二触头外壳体配合，第一转轴的长度不延伸出第一触头外壳体之外，第二转轴的长度延伸出第二触头外壳体之外。The first rotating shaft is a thick rotating shaft, and cooperates with the first contact outer casing, the second rotating shaft is a thin rotating shaft, and cooperates with the second contact outer casing, and the length of the first rotating shaft does not extend out of the first contact outer casing In addition, the length of the second shaft extends beyond the second contact housing.
  6. 如权利要求5所述的断路器的触头模块，其特征在于，所述第二单极开关包括第三触头外壳体、第四触头外壳体、第一转轴、第三转轴、第二转子部件、静触头和灭弧室；The contact module of a circuit breaker according to claim 5, wherein the second single pole switch comprises a third contact outer casing body, a fourth contact outer casing body, a first rotating shaft, a third rotating shaft, and a second Rotor component, static contact and arc extinguishing chamber;
    第三触头外壳体是弱侧的触头外壳体，与第二触头外壳体具有对称结构，第四触头外壳体是强侧的触头外壳体，与第一触头外壳体具有对称结构，第三触头外壳体和第四触头外壳体拼接形成内腔，内腔中容纳第二转子部件、静触头和灭弧室，第二转子部件与第一转子部件具有对称结构；The third contact outer casing is a weak side contact outer casing, and has a symmetrical structure with the second contact outer casing, and the fourth contact outer casing is a strong side contact outer casing, and is symmetric with the first contact outer casing a structure, the third contact outer casing and the fourth contact outer casing are spliced to form an inner cavity, the inner cavity accommodating the second rotor component, the static contact and the arc extinguishing chamber, and the second rotor component and the first rotor component have a symmetrical structure;
    第一转轴与第四触头外壳体配合，第三转轴是较薄的转轴，第三转轴与第三触头外壳体配合，第三转轴的长度不延伸出第三触头外壳体之外，第一转轴的长度不延伸出四触头外壳体之外。 The first rotating shaft cooperates with the fourth contact outer casing, the third rotating shaft is a thin rotating shaft, the third rotating shaft is matched with the third contact outer casing, and the length of the third rotating shaft does not extend beyond the third contact outer casing, The length of the first shaft does not extend beyond the four-contact outer casing.
  7. 如权利要求6所述的断路器的触头模块，其特征在于，所述第三单极开关包括第三触头外壳体、第四触头外壳体、第一转轴、第二转轴、第二转子部件、静触头和灭弧室；The contact module of a circuit breaker according to claim 6, wherein the third single pole switch comprises a third contact outer casing body, a fourth contact outer casing body, a first rotating shaft, a second rotating shaft, and a second Rotor component, static contact and arc extinguishing chamber;
    第三触头外壳体是弱侧的触头外壳体，与第二触头外壳体具有对称结构，第四触头外壳体是强侧的触头外壳体，与第一触头外壳体具有对称结构，第三触头外壳体和第四触头外壳体拼接形成内腔，内腔中容纳第二转子部件、静触头和灭弧室，第二转子部件与第一转子部件具有对称结构；The third contact outer casing is a weak side contact outer casing, and has a symmetrical structure with the second contact outer casing, and the fourth contact outer casing is a strong side contact outer casing, and is symmetric with the first contact outer casing a structure, the third contact outer casing and the fourth contact outer casing are spliced to form an inner cavity, the inner cavity accommodating the second rotor component, the static contact and the arc extinguishing chamber, and the second rotor component and the first rotor component have a symmetrical structure;
    第一转轴与第四触头外壳体配合，第二转轴与第三触头外壳体配合，第一转轴的长度不延伸出第四触头外壳体之外，第二转轴的长度延伸出第三触头外壳体之外。 The first rotating shaft cooperates with the fourth contact outer casing body, and the second rotating shaft cooperates with the third contact outer casing body, the length of the first rotating shaft does not extend beyond the fourth contact outer casing body, and the length of the second rotating shaft extends out of the third Outside the contact housing.
PCT/CN2014/086918 2013-09-24 2014-09-19 Contact module for breaker WO2015043422A1 (en)

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US15/024,334 US9704675B2 (en) 2013-09-24 2014-09-19 Contact module for circuit breaker
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BR112021011037A2 (en) * 2018-12-21 2021-08-31 Weg Drives & Controls Automação Ltda. INTERRUPTION MODULE IN MOLDED BOX FOR CIRCUIT BREAKER IN MOLDED BOX AND CIRCUIT BREAKER IN MODULAR BOX
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EP3051565A1 (en) 2016-08-03
CA2925043C (en) 2020-03-24
CN104465235A (en) 2015-03-25
CA2925043A1 (en) 2015-04-02
PL3051565T3 (en) 2020-07-13
US20160233038A1 (en) 2016-08-11
US9704675B2 (en) 2017-07-11
EP3051565B1 (en) 2019-10-23
EP3051565A4 (en) 2017-04-19
CN104465235B (en) 2016-07-06

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